C1111133313331323223313331333133313331333131211113313331211111333133321   >>    C111113331333132322331333133313331333133313121111331333121111133313332   <<    C1111133313331323223313331333133313331333131211113313331211111333133323   >>      C1111133313331323223313331333133313331333131211113313331211111333133322   >>